Valve-grinding tool



E. G. THOMPSON.

VALVE GRINDING TOOL.

APPLICATION FILED OCT. 2, 1919.

1,352,638, PatentedSept. 14,1920.

awwm/boz mum/hm 6'. 7720222 129022 lar to that shown ell i0 elitespanner recesses which are a, eonslo distance apart and it will benecessary move the plate 18, :is shown Fig. order to elieoeively use thetool.

lily tool is readily applicable to both types of valves liereinbeio' e3ft iEOTli'il and is adjustable to i alves of any size. It will foundthat because of triangulai? sliipe may be more eli eN'ivel-y rotatedbetween palms of the bends in grinding veins. course, the tool may alsobe rotated by ordinary brace, ln some instances l Wooden handle will beused It is to be understood that the to inventionilierein. shown anddesei be taken as e i 'ireieried form of and batmrions changes in theshape, and arrangemeni of parts may be rose: to without departing fromthe spirit the invention or the scope oi the subioinecii claims Havingthus described my who; I claim is:

1. A valve grinding tool comprising pair of resilient legs having; theirfree ends movable toward. and from each other, the free extremities ofthe legs being sbs ed to engage in the spanner rec e; screw driver bladedisposed. between se'i legs, b o-acting means between the blade and. thelegs to prevent rotation of the former H1? enison,

and also to permit it to be positioned to 6K tend beyond the extremltlesof the legs for 2. 1 valve grinding tool, comprising a pair of legsllfWlIlf their free ends movable toward and from each other, the lowerextremities of the legs being shaped to engage in like Spenser reo seeof a valve, said legs being also provided with elongated slots ed joc n6their ends, a reversible blade having onti'mi'c y erlrending studsthereon adapted to said elonq'a'ted. slots, whereby said blade may bepositioned to enter into a lzerf or in valve when in operation or may bereversed and positioned between the legs when ii. inoperative position,and means associated with the legs to cause them to move iowsrd eachother.

3. A valve griiiding tool, comprising a, strip of spring metalsubstantially triangular in cross section bent upon itself to formoppositely disposed parallel legs,

is upper and intern being substantially close together and 3 lower freeends 'ijllQl'BOf being flared out- Wfilillff to form a space, theextreme ends of said. legs being reduced and substantially round andadapted to enter in spanner reoesses in 11. valve, each of said. legsbeing provided with elongated slots edjeoeinrthe redosed ends, a relOVfllOlQ and reversible blade lowing lugs thereon, said lugs fittinginto the elongated slots in the legs, and leans to connect said legs,whereby the blade may be moved to operative or inoperative position,seid reduced ends of the legs being available for engagement with thespanner recesses valve When the blade is in inoperative position.

ln testimony whereof I haveliereunt-o set my liand.

,-. EDDIE G. THOMPSON oiete portions of said i

